<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">您的位置</div>
        <div class="button-list">
          <div class="button-wrapper ">
            <div class="button current">{{this.currentCity}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item of hot" :key="item.id" @click="handleCityClick(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area"
           v-for="(item,key) of cities"
           :key="key"
           :ref="key"
      >
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom"
               v-for="inner_item of item"
               :key="inner_item.id" @click="handleCityClick(inner_item.name)">{{inner_item.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  },
  watch: {
    letter () {
      if (this.letter) {
        const ele = this.$refs[this.letter][0]
        this.scroll.scrollToElement(ele)
      }
    }
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  }
}
</script>

<style lang="scss" scoped>
  @import "~styles/varibles.scss";
  .border-topbottom{
    &:before,&:after{
      border-color: #ccc;
    }
  }
  .border-bottom{
    &:before{
      border-color: #ccc;
    }
  }
  .list{
    overflow: hidden;
    position: absolute;
    top: 1.58rem;
    left: 0;
    right: 0;
    bottom: 0;
    .title{
      line-height: .54rem;
      padding-left: .2rem;
      background: #eee;
      font-size: .26rem;
      color: #666;
    }
    .button-list{
      overflow: hidden;
      padding: .1rem .6rem .1rem .1rem;
      .button-wrapper{
        width: 33.33%;
        float:left;
        .button{
          margin: .1rem;
          padding: .1rem 0;
          text-align: center;
          border: .02rem solid #ccc;
          border-radius: .06rem;
        }
        .current{
          border: 1px solid #00bcd4;
          color:#25a4bb;
        }
      }
    }
    .item-list{
      .item{
        line-height: .7rem;
        color:#666;
        padding-left: .2rem;
      }
    }
  }

</style>
